2131031321213 has 8 divisors (see below), whose sum is σ = 2141278675200. Its totient is φ = 2120804200528.

The previous prime is 2131031321191. The next prime is 2131031321219. The reversal of 2131031321213 is 3121231301312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131031321213 - 2¹⁰ = 2131031320189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131031321219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4847153 + ... + 5268486.

It is an arithmetic number, because the mean of its divisors is an integer number (267659834400).

Almost surely, 2^{2131031321213} is an apocalyptic number.

It is an amenable number.

2131031321213 is a deficient number, since it is larger than the sum of its proper divisors (10247353987).

2131031321213 is a wasteful number, since it uses less digits than its factorization.

2131031321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116651.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2131031321213 its reverse (3121231301312), we get a palindrome (5252262622525).

The spelling of 2131031321213 in words is "two trillion, one hundred thirty-one billion, thirty-one million, three hundred twenty-one thousand, two hundred thirteen".